rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (9240 ticks this GP) idle=6c9c/1/0x4000000000000000 softirq=13872/13872 fqs=4085
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   934434          0            0
rcu: 	cputime:    27324      25145           81   ==> 52470(ms)
rcu: 	(t=10500 jiffies g=14061 q=1964 ncpus=2)
CPU: 0 PID: 6505 Comm: syz.2.177 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:244 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x90 kernel/kcov.c:313
Code: 08 03 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 15 60 9e 7c 7e 65 8b 0d 61 9e 7c 7e 81 e1 00 01 ff 00 74
RSP: 0018:ffffc900000079d0 EFLAGS: 00000246
RAX: ffffffff81767678 RBX: ffffc90000007a68 RCX: ffff888029d41e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff11005ce7ae1 R08: ffffffff911bf58f R09: 1ffffffff2237eb1
R10: dffffc0000000000 R11: fffffbfff2237eb2 R12: 0000000000000000
R13: ffff88802e73d708 R14: 1ffff11005ce7ae4 R15: 0000000027000000
FS:  00007ff7e85ea6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000075b39000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_timer_base+0x68/0x270 kernel/time/timer.c:997
 __mod_timer+0xf9/0xdb0 kernel/time/timer.c:1080
 addrconf_mod_rs_timer+0x51/0xe0 net/ipv6/addrconf.c:323
 addrconf_rs_timer+0x3b6/0x630 net/ipv6/addrconf.c:4033
 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x542/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x280/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:check_region_inline mm/kasan/generic.c:169 [inline]
RIP: 0010:kasan_check_range+0x10/0x290 mm/kasan/generic.c:187
Code: c0 c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc 66 0f 1f 00 b0 01 48 85 f6 0f 84 b4 01 00 00 55 <41> 57 41 56 41 55 41 54 53 4c 8d 04 37 49 39 f8 0f 82 13 02 00 00
RSP: 0018:ffffc900038d7790 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000010 RCX: ffffffff8a8c57b6
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc900038d7950
RBP: 0000000000000000 R08: ffffffff911bf5ff R09: 1ffffffff2237ebf
R10: dffffc0000000000 R11: fffffbfff2237ec0 R12: 1ffff9200071af18
R13: ffffc900038d7950 R14: ffffc900038d7950 R15: 0000000000000001
 __asan_memset+0x22/0x40 mm/kasan/shadow.c:84
 __schedule+0xc6/0x45a0 kernel/sched/core.c:6583
 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 smp_call_function_single+0x48d/0x5a0 kernel/smp.c:652
 task_function_call kernel/events/core.c:120 [inline]
 perf_install_in_context+0x5be/0x920 kernel/events/core.c:2948
 __do_sys_perf_event_open kernel/events/core.c:12915 [inline]
 __se_sys_perf_event_open+0x1836/0x1c50 kernel/events/core.c:12567
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff7e779bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff7e85ea028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007ff7e7a15fa0 RCX: 00007ff7e779bf79
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007ff7e78327e0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff7e7a16038 R14: 00007ff7e7a15fa0 R15: 00007ffc58648478
 </TASK>